What is dotnet-format?

A guide for using dotnet format, the .NET SDK command that checks or fixes code formatting and analyzer issues. It uses the repository’s .editorconfig settings.

Use it to format a .NET solution or project, fix style and analyzer issues, and add a CI check with dotnet format --verify-no-changes.

It provides a consistent way to apply code style and run formatting checks, including checks that fail when files would need changes. This makes style enforcement suitable for continuous integration.

dotnet-format — Skill by managedcode

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add skills/managedcode/mcpgateway/dotnet-format

Any agent

npx skills add managedcode/MCPGateway --skill dotnet-format

Clone the repo

git clone --depth 1 https://github.com/managedcode/MCPGateway

Made for: Claude Code, Codex.

Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 962 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. Scan, not verified.

Origin 100% copy Near-identical to another mod in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5	$0.00055	$0.00962
Opus 5	$0.00028	$0.00481
Sonnet 5	$0.00011	$0.00192
Haiku 4.5	$0.00006	$0.00096

Measured 2d ago against content hash 59c7430c0a58, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

dotnet-format scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

100% identical to dotnet-format — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

.codex/skills/dotnet-format/SKILL.md · 111 lines

How it starts

The opening of the file, as written. The whole thing — 111 lines — stays where its author put it; the contents beside it link to each section on GitHub.

dotnet format

Trigger On

the repo uses dotnet format
you need a CI-safe formatting check for .NET
the repo wants .editorconfig-driven style enforcement

Value

produce a concrete project delta: code, docs, config, tests, CI, or review artifact
reduce ambiguity through explicit planning, verification, and final validation skills
leave reusable project context so future tasks are faster and safer

Do Not Use For

repositories that intentionally use CSharpier as the only formatter
analyzer strategy with no formatting command change

Inputs

the nearest AGENTS.md
the solution or project path
the current .editorconfig

Quick Start

Read the nearest AGENTS.md and confirm scope and constraints.
Run this skill's Workflow through the Ralph Loop until outcomes are acceptable.
Return the Required Result Format with concrete artifacts and verification evidence.

Workflow

Prefer the SDK-provided dotnet format command instead of inventing custom format scripts.
Start with verify mode in CI: dotnet format TARGET --verify-no-changes.
Use narrower subcommands only when the repo needs them:
- whitespace
- style
- analyzers
Keep .editorconfig as the source of truth for style preferences.
If the repo also uses CSharpier, document which tool owns which file types or rules.

Bootstrap When Missing

If dotnet format is requested but not available yet:

Detect current state:
- dotnet --info
- dotnet format --version
Treat dotnet format as SDK-provided, not as a separate repo-local tool by default.
If the command is missing, install or upgrade to a supported .NET SDK, then recheck dotnet format --version.
Add explicit local and CI commands to AGENTS.md, usually:
- dotnet format TARGET --verify-no-changes
Run the chosen command once and return status: configured or status: improved.
If the repo intentionally uses only CSharpier for formatting ownership, return status: not_applicable.

Read the full file on GitHub · 111 lines

Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2d ago First seen · 111 lines · 55 tokens per session scan A 59c7430c0a58

Subscribe to this mod's changes

dotnet-format is a skill published in the GitHub repository managedcode/MCPGateway (5 stars, last pushed 2d ago), licensed MIT. It adds 55 tokens to every session and 962 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to dotnet-format, differing in 0 lines, and is treated as a copy.

DevOps and cloud Research ai-extensions csharp dotnet embeddings mcp mcp-gateway

dotnet-format